All-Laser LASIK with IntraLase uses lasers to create the corneal flap and perform the vision correction. Previously, the first step (creating the corneal flap) was done manually with a hand-held device, called a microkeratome. Dr David Kleiman - though the microkeratome method is still an approved method, the IntraLase laser is documented to be safer because it uses a precise computer-controlled beam of light to create the flap.
Your expectations before LASIK also may play a key role in how happy you are afterward. Remember, the goal of LASIK is to decrease your dependence on glasses and help you to see acceptably well without corrective lenses. Results vary from person to person.